The elements that are in group 2 of the Periodic Table, namely Be, Mg, Ca, Sr, Ba and Ra. Some other transition metals will form +2 ions, such as Cu, Zn, Fe, etc.
The elements that are in group 2 of the Periodic Table, namely Be, Mg, Ca, Sr, Ba and Ra. Some other transition metals will form +2 ions, such as Cu, Zn, Fe, etc.
two elements with ions with a 2 plus charge are Sulfurand Oxygen
The most familiar one is aluminum, which can form ions with a charge of plus 3, for example in compounds such as aluminum oxide.
Plus charge, ie, it has H3O^+ ions (hydronium ions)
This are alpha particles which are made up of Helium ions and are +2 charge.
Calcium ions have a charge of plus two, and bromine ions have a charge of minus one.
Cations.
Many different chemical species can form an ion with a plus 1 change. The most common example of cations of this type are the alkali metals, such as sodium and potassium.
When these two elements form an ionic compound (either with each other or with any other elements) then those are the ions that they form, Ca+2 and F-1.
AlCl3
maybe rust
Ba3N2
HOH or H2O is water.